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High Energy Nuclear Reactions and Creation of Quark-Gluon Plasma

Research Project

Project/Area Number 59540162
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionKagoshima University

Principal Investigator

KINOSHITA Kisei  Professor, Faculty of Education, Kagoshima University, 教育学部, 教授 (80037209)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Akihiro  Associate Professor, College of Liberal Arts, Kagoshima University, 教養部, 助教授 (60172392)
KAGIYAMA Shigenori  Professor, College of Liberal Arts, Kagoshima University, 教養部, 教授 (80094134)
MINAKA Akira  Associate Professor, Faculty of Education, Kagoshima University, 教育学部, 助教授 (20136831)
Project Period (FY) 1984 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1986: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1985: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1984: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsHigh-energy nucleus reaction / Quark-gluon plasma / Hadron-nucleus collision / Multiple production / クォークジェット
Research Abstract

The purpose of this research was to investigate the mechanism of multi-particle production of hadrons in high-energy collisions involving nuclei, and the dynamics of quark-gluon plasma.
For this purpose, we adopted two approaches. The first is to investigate dynamical aspects of quark-gluon plasma on the basis of hydrodynamical equation. The second is to develop event generation program for multi-chain model as a standard model of nucleus collisions, so as to confront the forthcoming data of high energy nucleus-nucleus collision.
In the first approach, assuming the emergence of the quark-gluon plasma, we have analyzed its time-development on the basis of three-dimensional relativistic hydrodynamical equation of motion. As a result of numerical calculation, we found that transverse motion of the fluid have strong influence on the transverse momentum of produced hadrons and that its distribution gives an information of the initial state of the quark-gluon plasma.
In the second approach, we have studied jets in electronpositron pair annihilation using quark cascade model and analyzed heavy quark fragmentation in detail. Moreover, we constructed hadronic chain model for the analysis of high-energy collision of hadrons and/or nuclei and developed an event generation program using Monte-Carlo method. This is necessary to distinguish new phenomena such as production of quark-gluon plasma from the backgrounds. We found that this model describes dominant features in hadron-hadron collision and is also useful for the high-energy collisions involving nuclei.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 野田二次男: Progress of Theoretical Physics. 74. 1084-1091 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 木下紀正: Progress of Theoretical Physics. 75. 84-91 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 田代勤,他: Zeitschrift fiir Physik C,Particles and Fields. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 鍵山茂徳: Progress of Theoretical Physics. 75. 319-332 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 鍵山茂徳: Progress of Theoretical Physics. 76. 171-183 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 鍵山茂徳: Progress of Theoretical Physics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hujio NODA, Tsutomu TASHIRO and Kisei KINOSHITA: "Baryon. Antibaryon and Heavy Flavoured Hadron Production in <e^+> <e^-> Annihilation" Prog. Theor. Phys.74. 1084-1094 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kisei KINOSHITA: "A Covariant Parton Model for Heavy Quark Fragmentation" Prog. Theor. Phys.75. 84-91 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hujio NODA. Tsutomu TASHIRO, Kisei KINOSHITA and Chikashi ISO: "Single-Particle Spectra in Soft Hadron-Hadron Interactions and Two-Component Cascade Model" submitted for publication.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Shigenori KAGIYAMA, Akihiro NAKAMURA and Akira MINAKA: "Cylindrical Expansion and Hadronization of Quark-Gluon Fluid" Prog. Theor. Phys.75. 319-332 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Shigenori KAGIYAMA, Akihiro NAKAMURA and Akira MINAKA: "Hydrodynamical Evolution of Quark-Gluon Fluid" Prog. Theor. Phys.76. 171-183 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Shigenori KAGIYAMA, and Akihiro NAKAMURA: "Degeneracy Factor of Hadron and Hadron-Quark Phase Transition" submitted for publication.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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